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A fan wearing a chewbacca costume in the stands during the game between the New England Patriots and Buffalo Bills at New Era Field.
Rich Barnes, USA TODAY Sports

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The Kansas City Chiefs mascot KC Wolf sings with a fan in a wolf costume during the second half against the Denver Broncos at Arrowhead Stadium.
Denny Medley, USA TODAY Sports

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An Oakland Raiders fan holds a Chuckie doll before the game against the Indianapolis Colts at Oakland Coliseum.
Kelley L Cox, USA TODAY Sports

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A Seattle Seahawks fan looks on during the game against the Detroit Lions at Ford Field.
Tim Fuller, USA TODAY Sports

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Philadelphia Eagles fans react during the second half of an NFL International Series game against the Jacksonville Jaguars at Wembley Stadium.
Steven Flynn, USA TODAY Sports

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A fan cheers prior to the game between the Houston Texans and the Miami Dolphins at NRG Stadium.
Troy Taormina, USA TODAY Sports

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Fans pose with a Los Angeles Chargers flag during an NFL International Series game against the Tennessee Titans at Wembley Stadium.
Kirby Lee, USA TODAY Sports

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Chargers fans before the NFL game between Tennesse Titans and LA Chargers at Wembley Stadium in London, Britain, 21 October 2018.
NEIL HALL, EPA-EFE

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A Charger fans before the NFL game between Tennesse Titans and LA Chargers at Wembley Stadium in London, Britain, 21 October 2018.
NEIL HALL, EPA-EFE

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An Arizona Cardinals looks on during the first half against the Denver Broncos at State Farm Stadium.
Matt Kartozian, USA TODAY Sports

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A Green Bay Packers fan looks on during warmups prior to the game against the San Francisco 49ers at Lambeau Field.
Jeff Hanisch, USA TODAY Sports

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A New England Patriots end zone minuteman fires a musket during the game against the Kansas City Chiefs at Gillette Stadium.
Greg M. Cooper, USA TODAY Sports

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Baltimore Ravens free safety Eric Weddle poses for a selfie with fans after a win against the Tennessee Titans at Nissan Stadium.
Christopher Hanewinckel, USA TODA

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A fan dressed as a Bengals themed "Star Wars" Stormtrooper during the game of the Pittsburgh Steelers against the Cincinnati Bengals at Paul Brown Stadium.
Aaron Doster, USA TODAY Sports

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Fans cheer during the game between the Oakland Raiders and the Seattle Seahawks at Wembley Stadium in London.
Steven Flynn, USA TODAY Sports

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A Dallas Cowboys fan poses for a photo prior to the game against the Jacksonville Jaguars at AT&T Stadium.
Matthew Emmons, USA TODAY Sports

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A Denver Broncos fan reacts before a game against the Los Angeles Rams at Broncos Stadium at Mile High.
Isaiah J. Downing, USA TODAY Sports

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New Orleans Saints fans prepare to celebrate quarterback Drew Brees' NFL record for career passing yards, set against the Washington Redskins at the Mercedes-Benz Superdome.
Chuck Cook, USA TODAY Sports

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A fan stands in a clown costume during the game between the Miami Dolphins and Cincinnati Bengals at Paul Brown Stadium.
Aaron Doster, USA TODAY Sports

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Fans cheer during the game between the Houston Texans and the Dallas Cowboys at NRG Stadium.
Troy Taormina, USA TODAY Sports

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An Oakland Raiders fan cheers during the first quarter against the Los Angeles Chargers at StubHub Center.
Jake Roth, USA TODAY Sports

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A New York Jets fan cheers from the stand during the game against the Denver Broncos at MetLife Stadium.
Robert Deutsch, USA TODAY Sports

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Dan Lancy of Youngstown, Ohio, stands on the sidelines as the "Macho Fan" in support of the Cleveland Browns before the game between the Browns and the Baltimore Ravens at FirstEnergy Stadium.
Ken Blaze, USA TODAY Sports

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Cody Bedard has the New England Patriots logo cut into his hair by Kevin Rosas in the parking lot at Gillette Stadium before the game between the New England Patriots and the Indianapolis Colts at Gillette Stadium.
Winslow Townson, USA TODAY Sports

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Denver Broncos fans react before the Monday night game against the Kansas City Chiefs at Broncos Stadium at Mile High.
Ron Chenoy, USA TODAY Sports

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Tennessee Titans fan Ron Wray of Nashville shows his support prior to the game against the Philadelphia Eagles at Nissan Stadium.
Jim Brown, USA TODAY Sports

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A Tampa Bay Buccaneers fan cheers on his team against the Chicago Bears at Soldier Field.
Kamil Krzaczynski, USA TODAY Sports

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An Arizona Cardinals fan cheers on his team during the second half against the Chicago Bears.
AP

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A Philadelphia Eagles fan yells during the game against the Indianapolis Colts.
AP

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An Elvis clad fan cheers during the game between the Jacksonville Jaguars and the Tennessee Titans at TIAA Bank Field.
Reinhold Matay, USA TODAY Sports

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A Kansas City Chiefs fan shows her support during the second half against the San Francisco 49ers at Arrowhead Stadium.
Denny Medley, USA TODAY Sports

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A young Cleveland Browns fan holds a sign referencing the Browns' winless streak and before the "Thursday Night Football" game against the New York Jets at FirstEnergy Stadium. The Browns won the game, 21-17, ending a 19-game winless streak.
Ken Blaze, USA TODAY Sports

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A Seattle Seahawks fan reacts prior to a game against the Chicago Bears at Soldier Field.
Patrick Gorski, USA TODAY Sports

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An Oakland Raiders fan during the game against the Denver Broncos at Broncos Stadium at Mile High.
Ron Chenoy, USA TODAY Sports

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A Jacksonville Jaguars fan dressed as a jaguar cheers during the second half against the New England Patriots.
Reinhold Matay-USA TODAY Sports